not a popular choice but one I've been real happy with so far this winter...
Running tights, with or without knee warmers, under Carhart double knee jeans. So far, this combo has been great down to about 5 degrees and riding in snow. I do wash the jeans with nik-wax product so thats my disclaimer. No jeans in rain. I have goretex over pants for that...

Old Columbia BugaBoo shell system for cold/wet, and a nik waxed Nike running jacket for dry down to about 15F....

Hope that helps...Mostly multipurpose equipment. Have a hard time swallowing the prices' of bike specific gear...